Power driven mechanic&#39;s hand tool



Qct. 18, 1932. v MQLL 1,883,392 POWER DRIVEN MECHANICS HAND TOOL Filed April 15, 1951 2 Sheets-Sheet 1 [/1 van/or Harvey Oct. 18, 1932. E M M; 1,883,392

POWER DRIVEN MECHANICS HAND TOOL Filed April 15, 1931 2 Sheets-Sheet 2 mummunugx g 7 J6 119.1 Tigfz 1:: 4

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3 a 77' A gig Patented Oct. 18, 1932 UNITE-o STATES PATENT OFFICE EDWIN MOLL, OF PORTLAND, OREGON rowan DRIVEN MECHANICS HAND TOOL Application .filcd April 15,

v.10 cutting of grooves, recesses and in the routing of. openings at one, or more elevations in a surface into whlch any art1cle1s to be fitted, gripped, or placed.

The invention consists primarily of a prime i5 mover as an electric, or air motor, that is adapted for being carried, or supported Within the hand of the mechanic and for being manipulated into and out of driving condition by a trigger switch.

"tion assembly associated with the primary shaft for increasing, or decreasing the speed k v the invention consists 1n certam novel feaof the driven shaft. -A housing is removably secured to the primemover and the driven shaft of the prime mover is adaptedfor having cutter heads remov'ably. secured thereto. The housing for the cutterheads has a base with one, or more elevations associated therewith to adapt the same to the work to be performed at the desired depth, or elevation.

A hand engaginghandle is secured to the housing to adapt the same for being efficient- 1y used by the mechanic operatingthe same. One of theobjects of my invention is to 35 provide a tool that maybe efficiently used by carpenters and the like .in-the reducing of a surface to aplano and for the finishing of the surface."

A further object, of my invention consists in providing a tool for use by carpentersand the like that maybe used-in the forming of routs, or grooves within the surface'at a predetermined depth, or elevation and in a predetermined spaced relationship with other surfaces, elevations, or lines. i

The prime mover may have a gear reducthe assembled device, shown secured t 1931. Serial No. 530,288.

A still further object of my invention consists in providing a simply constructed device comprised of few parts that the mechanic may use in the fitting of weather stripping to doors, windows, door frames, window frames and the like. I i

A still further object of my invention consists in providing a power driven hand manipulatedtool that will be sufficiently light in weight to enable the mechanic to use the assembled device in the normal work that he is employed to do Without undue effort, and

fatigue to the worker.

Still further objects of my invention consist in providing a device that may be removed and secured to a power driven unit and that be made to meet the requirements of the user of the same in the normal work in which he is engaged and to replace the hand methods and tools heretofore used. that are used for this purpose. p i

With these and incidental objects in View,

tures of construction and combination of parts, the essential elements of which are set forth in the appended claims, anda preferred form of embodiment of which is hereinafter shown with reference to the drawings which accompany and form apart of this specification.

In the drawings: 7

Fig. 1 is a perspective, front, endview'of o a prime mover, as an electric motor.

Fig. 2 is an inverted, front perspective view of the housing that is to be secured to the frame of the prime mover, but shown removed therefrom. a v I Fig. 3 is a perspective, front view of the spacer bar adapted for being secured to the underside of the housing.

Fig. 4 is a perspective, sideview of'a second spacer bar adapted for being secured to the underside of the housing and for being snapped into position. r

the housing, illustrating the Fig. 5 is a perspective, front view of the connecting frame that is disposed between the housing and the frame of the prime mover frame, the same being shown detached from the associating elements.

Fig. 6 is a sectional side view of the housing, shown attached to the prime mover, the same being taken on line 6-6 of Fig. 7, looking in the direction indicated.

Fig. 7 is a sectional, side view of the assembly, shown attached to the prime mover frame and illustrating a part of the prime mover frame.

Fig. 8 is a fragmentary, sectional, rear end view of the housing illustrating the same in;

position upon a window stile and illustrating the same in position for forming a groove therein.

Fig. 9 is a sectional, side view of a window stile and a sectional, end view of the housing and a side View of the cutter head in place within the housing and illustrating the same as forming a groove and a surface of different elevations to that of the primary elevation of the surface of the stile upon which the same is being used.

Fig. 10 is a fragmentary, rear end view of same in pOSltion upon a stile for forming a groove and a surface of different elevation than that of the primary elevation of the stile upon which the same is being used.

Fig. 11 is a fragmentary, sectional, end view of the housing illustrating a cutter head comprising two cutter members as saws, spaced apart to form parallelly disposed grooves in the material being worked upon.

Fig. 12 is a perspective, front view of a cutter head comprised of a saw, a dado head and a saw, each being spaced apart and each being of different diameters and each assembledupon an arbor that is adapted for be ng secured to the driven shaft or the prime mover.

Like reference characters refer to like parts throughout the several views.

My invention is adaptable for being detachably secured to any suitable prlme mover that is adapted for the work to be performed. For the purpose of this description, I have assumed that the prime mover 1 is an electrlc motr., A hydraulic, or pneumatic motor might be used with equal facility as the prime mover. A gear reduction house 2 15 secured to the end of the frame of the prime mover 1, and a suitable gear reduction, not here shown, is disposed between the armature shaft and the driven shaft 3. The driven shaft 3 is threaded upon its outer end to adapt the stub shaft of my device thereto and to facilitate the interchange of heads upon the driven shaft 3. A bracket 4, as. illustrated in Fig.

. 5 has a pair of arms 5 and 6 that are spaced apart at their free ends to straddle the driven shaft 3, and holes 7 and 8 are disposed in lessees the respective arms, in order to adapt the same for being removably secured to the head 2 of the prime mover. A housing 9 is adapted for being adjustably secured to the bracket 4. This may be accomplished through the use of arcuate slots 10 and 11 disposed upon the oppositely disposed ends of the flange 12 that forms one side of the housing. The meeting surfaces of the flange and the bracket being adapted for precisely engaging each other, and a stud is secured to the bracket and extends through the arcuate slots with thumb nuts being positioned upon the studs and for locking the housing relative to the studs and to the bracket 4. An opening 13 is disposed through one end of the housing through which the driven shaft 3 passes. The opening 13 being elongated to facilitate the adjustment of the housing relative to the bracket and to the driven shaft. Power is admitted into the prime mover through a suitable conductor 14 and a trigger switch 15 is associated with the handle grip 16 of the prime mover with a guard 17 protecting the trigger switch. A pistol grip 18 is disposed at one end of the base of the housing 9. The same being removably secured thereto through the action of fastening bolts 19 and 20. A base 21 lies in a single plane at the bottom of the housing. A hood 22 stiifens the frame, protects the workmen against the revolving cutter heads and secures the end members 23 and 24 to the housing, to the flange 12 and to each other.

The cutter head assembly is comprised of a stub arbor 25 that is made square, or hexagonal to facilitate the adjustment, removal and placing of the arbor assembly upon the driven shaft 3, the stub arbor, being threaded upon its inside to facilitate its engagement upon the threaded driven shaft 3. A shoulder 26 is formed upon the stub arbor against which a saw collar 27 rests, the saw collar being adaptable for being removably placed upon the arbor portion of the stub arbor Where the assembly is to be used for the cutting of a pair of'grooves within the material, the cutter head assembly may be comprised of a saw 28, a cutter head unit 29, of a different diameter to that of the saw, spreader collar 30 and a saw 31, of a still different diameter to the cutter head and the other of the saws, are mounted upon the turned portion of the arbor 32. A collar 33 is disposed on the outer end of the turned arbor 32 and engages the outside of the saw 31. A nut 34 secures the assembly upon the turned portion of the arbor. he cutter head assembly, as a whole, may be mounted upon the stub arbor assembly and be removed from the driven shaft 3 and replaced by other cutter head assemblies suitable for the work to be performed, or the cutter head assembly may be removed from the arbor and be replaced with other cutter units.

The depth that the cuts, or grooves, or routs, may be made into the material is redetermined by the location of the shield relative to the bracket and the prime mover so that the surface 35 and 36 of the base of the shield may be made to ride directly upon the work, or material upon which the cuts are to be made. Gripping thumb screws 37 and 38 are secured to the oppositely disposed ends of the base of the shield. and a guide bar 39, is adapted for being secured to the base of the housing, orshield by the thumb screws. Legs 40 and 41 disposed at the opposite end 9 of the base extend to one side of the bar 39 and a slot 42 is disposed within each end of the legs. The thumb screws 37 and 38 passing through the slots adapt the bar 39 in desired placement to act as a guide for positioning the cutters to the desired position relative to the edge of the 4 material over which the device is to be manipulated. In order to provide a greater adjustment for the bar 39 a plurality of spaced threaded holes 43 are provided in the ends of the base into which the locking adjustment screws 37 and 38 may be positioned.

A spacer bar 48, as illustrated in Fig. 4, is adapted for being snapped into position and to be made to engage the ledge 44 of the base. The spacer bar has a locking recess 45'disposed upon its one end, and is so shaped that the same will engage the end 46 of the base of the housing. The oppositely disposed end of the locking bar has a spring locking clamp 47 disposed upon its inner surface that is adapted .to engage the oppositely disposed end49 of the base, of the housing, and to lock the bar relative to the base of the housing. r

In order to adapt the assembly to work in at different widths, or spaces from the edge of the material it may be found necessary to make the spacer bars 48, of different width to accommodate the cutters disposed upon the stub arbor, for being spaced at different spaced widths from the edge of the material over which the device is to be manipulated, as I have illustrated in Figs.,8 to 11 inclusive.

Referring to Fig. 8, I show a strip'of material as a window, or door stile 50 as having a routed groove 51 being formed therein, in spaced relationship with the ledge 44 of the base of the housing. The spaced relationship of the recess 51 relative to that of the ledge 44 being acomplished through the meet a spacer bar 48 being positioned thereupon. In Fig. 9, I show the device as being manipulated over a strip of material 52 in which the guide 53 of the base of the housing is made to engage directly upon thesurface 54 0f the material being worked upon and illustrating a saw 55 for usein the forming of a recess 56 in desired spaced relationship with the edge surface, 54 of the material and illustratinga cutter head 57 as forminga surface 58 adjacent the recess 56 and being disposed perspective endview and as havingbeen finished illustrating the groove 56., in position within the material and the upper surface of the material being reduced to two difierent primary elevations with one disposed at ei-therside and adjacentthe routed groove 56.

InF'i -11 I show the stub shaft as'having a pairo spaced saws 60'and 61, being mounted upon the stub shaft and for forming paraltelly disposed grooves within the upper surface 62, of the material 63', that is being worked upon. The vertical surface 64 ofthe material, is made to directly engage upon the 7 guide 53.

Wh 1e various sizes, dimensions and of different, cutter'units, I do not lwishto be" limited to the application of my device to-cutter heads, as the'same may be made and comprised, of

cutter units of different sizes and relative diameter and of different shapes to meet the requirements for the handling of the material for the primary purpose intended.

In: order tof'orm a: device that may be easily used by mechanics without undue effort and fatigue, the various housings and frame structures should be made of suitable metal alloys and materials that will comprise the completed device as having a minimum of weight as aluminum, or aluminum alloy, or similar metals having an extremely low specific gravity.

While the form of mechanism herein shown- 1. In'a device of the class described, in

combination with a prime mover a bifurcated bracket removably attached to the frame of the prime mover, the ends of the bracket being adapted for straddling the I have here shown cutter heads of 7 driven shaft of the prime mover, a. housing 7 adjustably attachable to the bracket, the base of the housing lying in a plurality of planes, an aligning bar adjustably adapted to the base of the housing and secured to the ends thereof, a spacer bar adapted for being secured to the base of the housing and for being held thereupon by frictional engagement at its ends, and a cutter head assembly adapted to the driven shaft of the prime mover.

2. In a device of the class described, in combination with a portable prime mover, a

bracket adapted for attachment to the poW- er output end of the prime mover with the driven shaft of the prime mover passing. therethrough, a housing adapted for being adjustably attached to the bracket, a hood disposed central of the housing, the base of v the housing lying in a plurality of independent planes, a. plurality of aligning and spacer bars being adapted for being adjustably positioned relative to the base, a pistol grip handle adapted for being removably secured to the housing and an arbor shaftadapted for being threadably attached to the driven shaft of the prime mover.

3. In a device of the class described, in

combination with a portable electric driven prime mover of a housing adapted for being indirectly attached and adjustably secured to the prime mover with the driven shaft of the prime mover passing through the side 7 Wall of the housing, a hood disposed central of the housing, a plurality of adjustable alignin and spacer bars adapted for being adj usta ly and removably secured to the base of the housing, a hand engaging handle secured to the one end of the housing and an arbor having a collar disposed thereupon and having an internal thread disposed upon one end to adapt the same for being secured to the driving shaft of the prime mover and having a clamping nut disposed upon its oppositely disposed end.

EDWIN MOLL. 

